115 lines
3.7 KiB
C
115 lines
3.7 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#ifndef __ASM_ELF_H
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#define __ASM_ELF_H
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/* ELF register definitions */
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#define ELF_NGREG 45
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#define ELF_NFPREG 33
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/* ELF header e_flags defines. MIPS architecture level. */
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#define EF_MIPS_ARCH_1 0x00000000 /* -mips1 code. */
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#define EF_MIPS_ARCH_2 0x10000000 /* -mips2 code. */
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#define EF_MIPS_ARCH_3 0x20000000 /* -mips3 code. */
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#define EF_MIPS_ARCH_4 0x30000000 /* -mips4 code. */
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#define EF_MIPS_ARCH_5 0x40000000 /* -mips5 code. */
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#define EF_MIPS_ARCH_32 0x50000000 /* MIPS32 code. */
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#define EF_MIPS_ARCH_64 0x60000000 /* MIPS64 code. */
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/* The ABI of a file. */
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#define EF_MIPS_ABI_O32 0x00001000 /* O32 ABI. */
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#define EF_MIPS_ABI_O64 0x00002000 /* O32 extended for 64 bit. */
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typedef unsigned long elf_greg_t;
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typedef elf_greg_t elf_gregset_t[ELF_NGREG];
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typedef double elf_fpreg_t;
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typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
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/*
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* This is used to ensure we don't load something for the wrong architecture.
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*/
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#define elf_check_arch(hdr) \
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({ \
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int __res = 1; \
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struct elfhdr *__h = (hdr); \
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\
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if (__h->e_machine != EM_MIPS) \
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__res = 0; \
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if (__h->e_ident[EI_CLASS] != ELFCLASS32) \
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__res = 0; \
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if ((__h->e_flags & EF_MIPS_ABI2) != 0) \
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__res = 0; \
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if (((__h->e_flags & EF_MIPS_ABI) != 0) && \
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((__h->e_flags & EF_MIPS_ABI) != EF_MIPS_ABI_O32)) \
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__res = 0; \
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\
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__res; \
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})
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/* This one accepts IRIX binaries. */
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#define irix_elf_check_arch(hdr) ((hdr)->e_machine == EM_MIPS)
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/*
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* These are used to set parameters in the core dumps.
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*/
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#define ELF_CLASS ELFCLASS32
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#ifdef __MIPSEB__
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#define ELF_DATA ELFDATA2MSB
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#elif __MIPSEL__
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#define ELF_DATA ELFDATA2LSB
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#endif
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#define ELF_ARCH EM_MIPS
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#define USE_ELF_CORE_DUMP
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#define ELF_EXEC_PAGESIZE PAGE_SIZE
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#define ELF_CORE_COPY_REGS(_dest,_regs) \
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memcpy((char *) &_dest, (char *) _regs, \
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sizeof(struct pt_regs));
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/* This yields a mask that user programs can use to figure out what
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instruction set this cpu supports. This could be done in userspace,
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but it's not easy, and we've already done it here. */
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#define ELF_HWCAP (0)
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/* This yields a string that ld.so will use to load implementation
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specific libraries for optimization. This is more specific in
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intent than poking at uname or /proc/cpuinfo.
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For the moment, we have only optimizations for the Intel generations,
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but that could change... */
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#define ELF_PLATFORM (NULL)
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/*
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* See comments in asm-alpha/elf.h, this is the same thing
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* on the MIPS.
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*/
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#define ELF_PLAT_INIT(_r, load_addr) do { \
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_r->regs[1] = _r->regs[2] = _r->regs[3] = _r->regs[4] = 0; \
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_r->regs[5] = _r->regs[6] = _r->regs[7] = _r->regs[8] = 0; \
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_r->regs[9] = _r->regs[10] = _r->regs[11] = _r->regs[12] = 0; \
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_r->regs[13] = _r->regs[14] = _r->regs[15] = _r->regs[16] = 0; \
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_r->regs[17] = _r->regs[18] = _r->regs[19] = _r->regs[20] = 0; \
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_r->regs[21] = _r->regs[22] = _r->regs[23] = _r->regs[24] = 0; \
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_r->regs[25] = _r->regs[26] = _r->regs[27] = _r->regs[28] = 0; \
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_r->regs[30] = _r->regs[31] = 0; \
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} while (0)
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/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
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use of this is to invoke "./ld.so someprog" to test out a new version of
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the loader. We need to make sure that it is out of the way of the program
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that it will "exec", and that there is sufficient room for the brk. */
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#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
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#ifdef __KERNEL__
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#define SET_PERSONALITY(ex, ibcs2) set_personality((ibcs2)?PER_SVR4:PER_LINUX)
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#endif
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#endif /* __ASM_ELF_H */
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